Electronics and Telecommunications Research Institute

Samsung Electronics Co., Ltd.

Lg Electronics Inc.

Industry-academic Cooperation Foundation, Chosun University

Sugentech, Inc.

Eunkyung Kim

Chul Sik Yoon

Sung Cheol Chang

Jae Sun Cha

Hyun Jun Lee

Kwang Jae Lim

Soojung Jung

Juhee Kim

Sung Kyung Kim

Seung-Kwon Baek

Chanho Yoon

Young Jo Ko

Won-Ik Kim

Yu Ro Lee

Hyun Seo Park

Hyun Jae Lee

Tae Joong Kim

Wooram Shin

Seokki Kim

Kyung Soo Kim

Mi Young Yun

Yun Joo Kim

Heesoo Lee

Anseok Lee

Sook Jin Lee

Gi Yoon Park

Youngjin Cho

Sangheon Kim

Yeunwook Lim

Young-Ho Jung

Hyun Sup Lee

Hyun-Jae Kim

An Seok Lee

Jae Joon Park

Taehyun Lim

Cheulsoon Kim

Sung-Hyun Moon

Namsuk Lee

Mi-Young Yun

Kang Soo Lee

Taesung Lee

Jooil Lee

Hyesook Jeon

Seokjoo Shin

DongSeung Kwon

Jihoon Choi

Hyun-jae Kim

Yong Jin Kwon

Pyeong Jung Song

Suyeon Kim

Heesoo Kang

Mi Jin Sohn

Sehwan Kim

Dong Gyu Lee

Changhee Han

Kyoungjin Lee

Jooyoung Jeon

Namgi Kim

Seungbum Yoo

Jeonghui Yun

Hyangseok Chae

Kwonseung Yang

Byoungkwon Roh

Sang Hoon Oh

An operation method of a terminal in a communication system may comprise: receiving a first occurrence reporting condition of a handover problem from a source base station; performing a handover from the source base station to a target base station; identifying whether a handover problem occurs based on the first occurrence reporting condition while performing the handover; and in response to identifying that a handover problem occurs, transmitting information indicating the occurrence of the handover problem to the target base station.

Method and apparatus for improving handover performance in communication system

Provided is a method for transmitting, by a transmitter, a first data having periodicity through a channel of an unlicensed band: The transmitter adjusts at least one of transmission timing of the first data and clear channel assessment (CCA) timing for the channel to occupy the channel. The transmitter determines whether the channel may be occupied by performing a CCA on the channel at the CCA timing. The transmitter transmits the first data through the channel at the transmission timing of the first data, when it is determined that the channel may be occupied.

Method and apparatus for managing allocation and usage of radio resource, method and apparatus for transmitting data through unlicensed band channel, and method and apparatus for managing access of radio resource

An electronic device includes a display, a memory, and a processor operatively connected to the display and the memory. The memory stores instructions that, when executed, cause the processor to receive backup data from an external electronic device, identify characteristics of the external electronic device based on the backup data, identify characteristics of the electronic device based on the backup data, at least partially change the backup data based on the characteristics of the electronic device, and display a result of performing a restoring operation based on the at least partially changed backup data on the display.

Electronic device and operation method thereof

An operation method of a terminal in a communication system may include receiving bandwidth part (BWP) change information from a base station in a BWP i; changing an operation BWP of the terminal from the BWP i to a BWP j even when a transmission and reception procedure of first data in the BWP i is not completed at a BWP changing point indicated by the BWP change information; and performing a data transmission and reception procedure of second data in the BWP j, wherein the BWP i and the BWP j are different BWPs, and i and j are different integers.

Method for bandwidth part management in communication system and apparatus for the same

Disclosed are a method and a device for low latency communication in a communication system. An operation method of a base station comprises the steps of: transmitting first scheduling information of data units, transmitted through A sections in subframe #n, to a terminal through a first control channel in subframe #n; transmitting the data units to the terminal through the A sections; and transmitting second scheduling information of data unit(s), transmitted through B section(s) in subframe #(n+k) following subframe #n, to the terminal through a second control channel in subframe #(n+k). Therefore, the performance of the communication system can be improved.

Method and device for low latency communication in communication system

A handover method of a first terminal in a wireless communication system may comprise: transmitting a first measurement report message to a first cell that is a primary cell (PCell); receiving, from the first cell, one or more first configuration messages for one or more target cells determined according to the first measurement report message; adding each of the one or more target cells as a candidate PCell based on the one or more first configuration messages; and performing data transmission and reception with at least one cell among the first cell and the one or more candidate PCells.

Method and apparatus for handover in wireless communication system

Disclosed are a method and an apparatus for enhanced conditional handover (CHO). An operation method of a base station may comprise: receiving a measurement report message from a terminal; transmitting a CHO request message to one or more candidate target cells; receiving a CHO request ACK message from the one or more candidate target cells; and transmitting an RRC reconfiguration message including CHO status report configuration information to the terminal, wherein the CHO status report configuration information requests transmission of information for determining a target cell to which terminal is likely to be handed over among the one or more candidate target cells.

Method and apparatus for conditional handover operation in communication system

Method and apparatus for managing allocation and usage of radio resource, method and apparatus for transmitting data through unlicensed band channel, and method and apparatus for managing access of radio resouce

An operation method of a terminal performing handover in a mobile communication system may comprise transmitting packet data convergence protocol (PDCP) downlink reception status information of the terminal and information on a target base station to a source base station; receiving downlink data from a user plane function (UPF) via the source base station based on a first tunnel configured between the source base station and the UPF; receiving downlink data from the UPF via the target base station based on a second tunnel configured by the UPF between the target base station and the UPF by using the PDCP downlink reception status information and the information on the target base station, which are transferred from the source base station; and discarding duplicated-received protocol data units (PDUs) from the source base station and the target base station, and reordering remaining PDUs.

Method of transmitting low-latency data during handover in communication system, and apparatus therefor

A device-to-device (D2D) communication method, performed by a receiving D2D terminal, may comprise receiving D2D data from a transmitting D2D terminal; generating feedback information for the D2D data; and receiving information on a first resource for transmission of the feedback information from a base station, and transmitting the feedback information to the transmitting D2D terminal through the first resource, wherein the information on the first resource is received without an explicit scheduling request (SR) to the base station.

Method and apparatus for transmitting sidelink feedback information

A method and an apparatus for allocating uplink resources includes transmitting an uplink grant (UL Grant) for an unlicensed component carrier (UCC) to a plurality of terminals, wherein the UL Grant for a first terminal among the plurality of terminals includes a resource allocation information in which a transmission timing of the uplink data of a second terminal among the plurality of terminals is considered.

Method and apparatus for allocating uplink resources

A base station divides a subframe into a downlink time duration for downlink, an uplink time duration for uplink, and a guard period between the downlink time duration and the uplink time duration. The base station transmits a downlink control channel including information on a downlink packet duration allocated for downlink transmission of a terminal and information on an uplink packet duration allocated for uplink transmission of the terminal to the terminal in the downlink time duration.

Method and apparatus for receiving or transmitting data

There is provided a method for transmitting, by a transmitter, a signal through an unlicensed band channel. The transmitter transmits an initial signal through the unlicensed band channel to preoccupy the unlicensed band channel when the unlicensed band channel is in an idle status. The transmitter includes a first partial subframe transmitted after the initial signal in a frame burst depending to transmission timing of the initial signal. Further, the transmitter transmits the frame burst through the unlicensed band channel.

Method and apparatus for transmitting adaptive partial subframe in unlicensed frequency band, method and apparatus for identifying a frame structure, and method and apparatus for transmitting signal

An operation method of a terminal in a communication system includes receiving bandwidth part (BWP) change information from a base station in a BWP i; changing an operation BWP of the terminal from the BWP i to a BWP j even when a transmission and reception procedure of first data in the BWP i is not completed at a BWP changing point indicated by the BWP change information; and performing a data transmission and reception procedure of second data in the BWP j, wherein the BWP i and the BWP j are different BWPs, and i and j are different integers.

An apparatus for receiving a signal through an unlicensed band includes: a processor, a memory, and a radio frequency unit, wherein the processor executes a program stored in the memory to perform: receiving a secondary synchronization signal (SSS) in at least one remaining subframe except a subframe 0 or a subframe 5 of a plurality of subframes included in a discovery signal measurement timing configuration (DMTC), and detecting the SSS by using a subframe number of the subframe 0 or the subframe 5.

Apparatus for transmitting and receiving data through unlicensed band

Growing community of inventors

Daejeon, South Korea

Eunkyung Kim